What method can scientists use to
determine when the fossil above appeared
on Earth?
Answers
Answer:
Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.
Explanation:
Related Questions
A person who is asymptomatic, but can still pass on an infectious disease is called a ______?
vector
carrier
genome
courier
Answers
A carrier is someone who shows no symptoms of a disease.
Hope this helps :)
PLEASE HELP!!!
The human body creates more carbon dioxide while exercising than when it is at rest. Which of the following best
explains how the systems in the human body work together to maintain homeostasis and remove excess carbon dioxide?
А
The respiratory system takes in more oxygen, and the blood transports the oxygen and carbon dioxide to and from the
tissues.
B
The circulatory system takes in less carbon dioxide, and the lungs transport more oxygen to and from the tissues,
The respiratory system takes in less carbon dioxide, and the heart pumps more oxygen to and from the tissues.
D
The circulatory system takes in more oxygen, and the skin transports the oxygen and carbon dioxide to and from the
tissues.
Answers
Answer:
A
Explanation:
Its only the blood that transports Oxygen and carbon dioxide to and from the tissues.
4. Why does sexual reproduction result in offspring with genetic variation?
Answers
This variation is due to independent assortment and crossing-over during meiosis, and random union of gametes during fertilization.
Answer: Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms.
Explanation: Each resulting cell, or gamete, resulting from meiosis has only half the amount of DNA as the parent cell.
25. Complete the diagram of phosphorylation :
Please help I have no idea what to do
Answers
Answer:
It is ATP on the other arrow
Which type of relationship do humans have with bacteria:
Mutualism or parasitism? Why?
Answers
In a certain flower, Red (R) is dominant over white (r). Complete the Punnett Square for the
following cross:
Mother: Rr Father: rr
What percentage of offspring will be Red?
What percentage of offspring will be White?
Answers
Answer: 50% will be red and 50% will be white
Explanation: Make a punnet square
R r Rr=red rr=white
r Rr rr
r Rr rr
Answer:
50 percent of the offspring would be red
50 percent would be white
PLEASE ANSWER QUESTION IN PHOTO NOOOOW.
Answers
Answer:
AUG GCU GGC UGA AAU
Explanation:
I am double checking.
first quarter moon
last quarter moon
new moon
full moon
Answers
Answer: Full Moon
Explanation:
tiying pe
Answer the following questions.
4) Choose the best answer.
How are organisms classified in the phylum category?
based on basic body structure
color
cell structure
chromosomes
Answers
Answer:
Basic body structure.
Explanation:
Organisms classified in the phylum category on the basis of their basic body structure. Organisms are classified in the groups and subgroups on the basis of similarities and differences. Those organisms that show resemblance is to be put in the same group. They have some similar characteristics such mode of reproduction, mobility, feeding behaviour and body structure etc.
8. Describe the changes that take place during the menstrual cycle from day 5-13 to the following:
a. Unfertilized egg in ovary______________
b. Uterus lining_______________________
Answers
Answer:
well B the uterus walls shed away and come out in clots of blood.
Which of the following does not describe how a change in the structure of genes can affect the function of the organism?
A mutation can cause the wrong protein to be made, sometimes harming the organism.
A
В.
A mutation can have a negative effect on the function of the organism.
C. A mutation always has a neutral effect on the function of the organism.
D. A mutation can cause the wrong protein to me made, sometimes helping the organism.
Answers
C) A Mutation always has a neutral effect on the function of the organism
HELPPP ITS FOR BIO AND SHE WONT LET ME TURN IT IN IF I DONT ENTER IT TOMORROW!!
Answers
Body of a female was found in alley behind dumpsters in a major u.S city. No apparent wounds were observed on the body
Answers
Answer:
Interesting
??
What is the answer that matches?
Answers
Answer:
carbohydrates
Explanation:
Carbohydrates are the main source of energy for the body. They are the sugars, starches, and dietary fiber that occur in plant foods and dairy products. Carbohydrates are mainly found in plant foods. They also occur in dairy products in the form of a milk sugar called lactose.
The two narrow tubes that urine flows through from the kidneys to the bladder are the
kidneys
esophagus
ureters
Answers
Answer:
Two ureters.
These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop.
What molecule contains hydrogen , carbon, nitrogen, and oxygen?
Answers
What molecule contains hydrogen , carbon, nitrogen, and oxygen?
Nucleic Acids
Answer:
Nucleic Acids
Explanation:
"Nucleic acids are organic compounds that contain carbon, hydrogen, oxygen, nitrogen, and phosphorus. They are made of smaller units called nucleotides. Nucleic acids are named for the nucleus of the cell, where some of them are found."
TRUE OR FALSE: Phospholipids that are a part of the nuclear envelope (membrane around the nucleus) can easily move from one part of the cell to another, and may ultimately become part of the cell membrane, the ER, a vesicle membrane, etc. In fact, any phospholipid may be called a "cellular tourist" because it is able to move about to virtually any part of a cell and can even become a part of a cell in a different region of the body! (EXPLAIN WHY)
Answers
Answer:
False, because phospholipids are a type of lipids and the nuclear envelope contains nucleic acids.
Explanation:
Hope this helps.
It is true that phospholipids that are a part of the nuclear envelope (membrane around the nucleus) can easily move from one part of the cell to another, and may ultimately become part of the cell membrane, the ER, a vesicle membrane, etc.
What is nuclear envelope made of?The nuclear envelope is made up of two concentric lipid bilayer membranes separated by a 20-40 nm intermembranous space.
In many places, the outer membrane is joined to the rough endoplasmic reticulum. The outer membrane of the nuclear envelope, like the rough ER, is dotted with ribosomes.
The nuclear envelope is made up of two membranes: an outer and an inner phospholipid bilayer. The lumen of the rough endoplasmic reticulum is connected to the thin space between the two layers (RER).
Nuclear pores, which are small channels that run across the nuclear envelope, allow substances to enter and exit the nucleus.
Each pore is lined by a group of proteins known as the nuclear pore complex, which regulates which molecules can enter and exit.
Thus, the given statement is true.
For more details regarding nuclear envelope, visit:
https://brainly.com/question/13334437
#SPJ2
Which choice shows the order in which primary succession takes place?
F. grass--soil - lichensrock
G. bare rock-lichens-grass-trees
H. lichens-bare rock-grass-soil
I. bare rock-soil -lichens-grass
Answers
Answer:
G. bare rock, lichens, grass, trees
Explanation:
The 6 steps of primary succession are;
I - bare rocks
II - pioneers (mosses, lichen, algae, fungi)
III - annual herbaceous plants
IV - perennial herbaceous plants and grasses
V - shrubs
VI - shade intolerant trees
VII - shade tolerant trees.
I would appreciate brainliest, if not that's ok!
Answer:
why did u answer efhe9udghewuidsgweiudfghdsuhfg
Explanation:
What does it mean for two species to be reproductively isolated from each other?
Answers
Question 7 of 30
Which of the following is the best definition of an ecosystem?
O A. A system formed by the interactions of all of the living things
within an area
B. A system formed by the interactions of organisms of the same
species that live in the same area
C. A system formed by the interactions of living organisms with the
nonliving physical environment
D. A system formed by the interactions of all of the nonliving things
that exist in the same area
Answers
Answer:
C
Explanation:
ecosystem is living AND non living things
The best definition of an ecosystem is option C: "A system formed by the interactions of living organisms with the nonliving physical environment."
What is an ecosystem?An ecosystem is a community of living organisms, such as plants, animals, and microorganisms, interacting with each other and their nonliving environment, including the atmosphere, soil, and water.
This interaction creates a functional system that can be characterized by energy flow and nutrient cycling. The other options are not accurate definitions of an ecosystem, as ecosystems involve both living and nonliving components, and the interactions are not limited to a single species.
Ecosystems are not isolated, and they can interact with other ecosystems. For example, rivers and streams can transport nutrients and organisms downstream, connecting different ecosystems such as a forest and a freshwater system. Similarly, the atmosphere can transport pollutants and other materials across vast distances, affecting ecosystems far from their source.
In summary, an ecosystem is a complex, interconnected system where living organisms interact with each other and the non-living components of their environment. Understanding the functions and interactions within ecosystems is critical to developing effective management strategies for conserving biodiversity and maintaining the ecosystem services that humans depend on.
Learn more about ecosystem at:
https://brainly.com/question/13979184
#SPJ7
Cells come from other cells. Question 2 options: Sometimes False Never True
Answers
Answer:
This statement is true because cells have the capability to divide.
Answer:
It is true
Explanation:
I took the test its right
24. In addition to water, the principal components of urine are
A) amino acids and fatty acids
B) urea and salts
C) ammonia and bile
D) hydrochloric acid and bases
Answers
Answer:
C
Explanation:
Hope this helps!!
1. Which type of information about rattlesnakes
does the bar graph above show? SC.7.L.15.2
A adaptation
B evolution
Cmimicry
D variation
Answers
Answer:
Variation
Explanation:
Answer: Variation
Explanation:
Has different species of rattlesnakes shown in the graph.
Guys pls help me!!!!!!
Answers
Answer
A
Explanation:
that is the cell membrane it is used specifically for that reason, to help good things get it and to keep bad things out
A strand of DNA consists of 35% adenine. What is the percentage of cytosine in that same
molecule of DNA?
Answers
Answer:
20.5%
Explanation:
Hope this helps!!
If the force of 50 N is applied to the front a car, what would balance the force and cause the car to remain still?
Answers
It would be balanced if another force of 50 N was applied to the back of the car.
What is the function of T-lymphocytes? Select all
that apply.
to assist other lymphocytes
to produce other lymphocytes
to kill cells infected with a virus or cancer
to help in the body's immune response
to circulate oxygen throughout the body
Answers
Answer:
to assist other lymphocytes
to kill cells infected with a virus or cancer
to help in the body’s immune response
Explanation:
Following are the functions of T-lymphocytes, here:
to assist other lymphocytesto kill cells infected with a virus or cancerto help in the body's immune responseWhat are T-lymphocytes?
T-lymphocytes, also known as T cells, are a type of white blood cell that plays a key role in the immune system. They are produced in the bone marrow and mature in the thymus gland.
One of the main functions of T-lymphocytes is to assist other lymphocytes, such as B cells, in the immune response. They do this by releasing chemicals that help to activate and coordinate the immune response, and by directly attacking infected cells.
T-lymphocytes also have the ability to kill cells that are infected with a virus or cancerous cells. They do this through a process called cell-mediated immunity, in which they recognize and bind to specific proteins on the surface of infected cells. Once they have bound to the infected cells, they release chemicals that kill the cells, helping to prevent the spread of the infection or cancer.
T-lymphocytes are an important part of the body's immune system and play a vital role in helping to protect the body against infections and disease.
Learn more about T-lymphocytes, here:
https://brainly.com/question/12324561
#SPJ2
Which word identifies the agent that carries the energy released from earthquakes?
1. Epicenter
2. Focus
3. Lithosphere
4. Waves
95 points, and plz hurry, thank you!
Answers
Answer:
it's D. waves
Explanation:
took the test on edge and got it correct
The infection-fighting cells that are produced by the immune system are manufactured in specific places around the body, for example, in the lymph nodes and the spleen. However, an infection can occur anywhere in the body. How do these infection-fighting cells manage to move around the body and get to the sites of infection?
A. There are lymph nodes every few millimeters all over the body.
B. They are excreted and float freely around the body, hunting infections.
C. They are carried around the body in the circulatory system.
D. They are moved around the body as muscles squeeze against them.
Answers
Answer:b
Explanation:
Explanation:
those cells are white blood cells.
Why cells are considered the basic structure of all living things how their specialized perform specific functions?
Answers
Answer:
The answer is below :D
Explanation:
Cell's are considered the basic structure of life because every living thing is made up of cell's . Cell's have stuff inside them called organelle's such as the Nucleus , Mitochondria , Vacuole , and more! If we weren't made up of cell's what would we be made up of ? There are skin cell's , brain cell's , blood cell's . Hope I helped and have a great day ∩^·ω·^∩ !